Whether in transit or the backcountry the Sea to Summit Aeros Pillow Premium lightweight and compact inflatable pillow will award you a comfortable sleep. This is a luxurious high performance pillow without the weight and bulk. The pillow case construction allows the outer shell to retain maximum softness while still being supported by a high strength TPU bladder. Brushed 50D polyester knit outer is very soft and durable. Synthetic fill between pillow case and TPU bladder increases comfort and wicks away perspiration. Curved internal baffles create contours that cradle your head. Scalloped bottom edge centers pillow around your shoulders whether you are sleeping on your back, side or upright in a chair. Inflate pillow in just a couple of breaths with the multi functional valve. Regular: 13.4 x 9.4 x 4.3 2.8 oz79g, stuffed 2.8 X 3.3 in7 X 8cm. Large: 16.5 x 11.8 x 5.1 3.7 oz105g, stuffed 3.1 X 3.3 in7.8 X 8.3cm.